<template>
	<view>
		<view class="search-box">
			<uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar>
		</view>
		<!-- 搜索建议列表 -->
		<view class="sugg-list" v-if="searchResult.length!=0">
			<view @click="gotoDetail(item)" class="sugg-item" v-for="(item,i) in searchResult" :key="i">
				<view class="goods-name">
					{{item.goods_name}}
				</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		<!-- 搜索历史 -->
		<view class="history-box" v-else>
			<!-- 标题区域 -->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons @click="clean" type="trash" size="17"></uni-icons>
			</view>
			<!-- 列表区域 -->
			<view class="history-list">
				<uni-tag @click="gotoGoodsList(item)" :text="item" v-for="(item,i) in histories" :key="i"></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		onLoad() {
			this.historyList=JSON.parse(uni.getStorageSync('kw')||'[]')
		},
		data() {
			return {
				timer:null,
				kw:'',
				searchResult:[],
				//搜索历史数组
				historyList:[]
			};
		},
		methods:{
			input(e){
				// console.log(e);
				clearTimeout(this.timer)
			this.timer=	setTimeout(()=>{
					this.kw=e
					this.getSearchList()
				},500)
			},
		 async	getSearchList(){
				if(this.kw.length===0){
					this.searchResult=[]
					return
				}
		 const {data:res}=await	uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
			if(res.meta.status!==200){
				return uni.$showMsg()
			}
			this.searchResult=res.message
			this.saveSearchHistory()
			},
			gotoDetail(item){
				uni.navigateTo({
					url:"/subpkg/goods_detail/goods_detail?goods_id="+item.goods_id
				})
			},
			saveSearchHistory(){
				// this.historyList.push(this.kw)
				const set=new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				this.historyList=Array.from(set)
				//对搜索历史数据进行持久化存储
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			clean(){
				this.historyList=[]
				uni.setStorageSync('kw','[]')
			},
			gotoGoodsList(kw){
				uni.navigateTo({
					url:"/subpkg/goods_list/goods_list?query="+kw
				})
			}
		},
		computed:{
			histories(){
				return [...this.historyList].reverse()
			}
		}
	}
</script>

<style lang="scss">
.search-box{
	position: sticky;
	top: 0;
	z-index: 999;
}
.sugg-list{
	padding: 0 5px;
	.sugg-item{
		font-size: 12px;
		padding: 13px 0;
		border-bottom: 1px solid #efefef;
		display: flex;
		align-items: center;
		justify-content: space-between;
		.goods-name{
			//文字不允许换行(单行文本)
			white-space: nowrap;
			//溢出部分隐藏
			overflow: hidden;
			//文本溢出后使用...代替
			text-overflow: ellipsis;
			margin-right: 3px;
		}
	}
}
.history-box{
	padding: 0 5px;
	.history-title{
		display: flex;
		justify-content: space-between;
		height: 40px;
		align-items: center;
		font-size: 13px;
		border-bottom: 1px solid #efefef;
	}
	.history-list{
		display: flex;
		flex-wrap: wrap;
		.uni-tag{
			margin-top: 5px;
			margin-right: 5px;
		}
		
	}
}
</style>
